The Additional section of the answers should be compared with BIND on
expected delegations.
Knot DNS also puts A/AAAA records into the Additional section for NS,
MX, and SRV records.
Since we need address for the query processing, we should employ
the structure for query processing related flags (they all are).
Added new flag that controls whether ANY disabled should be enforced
or not. Also added test for this case.